Wavenumber Calculator
Free calculate wavenumber from wavelength. wavenumber (k) is the number of wavelengths per unit distance, commonly used in spectroscopy.
Input Parameters
Results
Enter wavelength to calculate wavenumber
Wavenumber Formula
Wavenumber Equation
k = 1 / λ
Where k = wavenumber (m⁻¹), λ = wavelength (m)
Spectroscopic: ṽ = 1 / λ (cm⁻¹)
Applications
- • Spectroscopy: cm⁻¹
- • Wave physics: m⁻¹
- • Inverse of wavelength